422 Mr. F. Walker's Descriptions of Aphides. 



5tli variety. Yellowish green with a lively green stripe on 

 the back, and more rarely with one on each side. 



6th variety. Grass-green : the feelers are pale yellow, green at 

 the base and much shorter than the body ; the tips of the third 

 and of the fourth joints and the whole of the latter joints are 

 brown : the eyes are dark red : the mouth is pale yellow with a 

 brown tip : the legs are pale green or pale yellowish green , the 

 thighs are pale green towards the base ; the knees, the feet and 

 the tips of the shanks are brown. 



7th variety. Pale green mottled with a darker colour : the 

 feelers are pale yellow, and longer than the body ; the tips of 

 their joints are brown. 



8th variety. Body slightly covered with a white bloom or 

 powder. 



9th variety. Of a delicate rose-colour mottled with yellow : 

 the head is yellow : the limbs are white ; their tips are black. 



10th variety. Green mottled with red. 



11th variety. With a purple tint. 



The young one is flat and linear, and has a rim on each side 

 of the body ; its colour varies from pale green to pale yellow or 

 to pale red ; the tips of the limbs are brown. 



12th variety. The body is pale yellowish green, and much more 

 slender than in the other varieties ; the feelers are pale yellow, 

 longer than the body ; the tips of their joints are black : the eyes 

 are bright red : the mouth is pale yellow : the nectaries are pale 

 green, and as long as one-fourth of the body, their tips are black : 

 the tip of the abdomen is pale yellow : the legs are hairy, yellow, 

 and very long ; the knees, the feet, and the tips of the shanks are 

 black. On the tansy, and on the wormwood. 



The viviparous wimjed female. When young it is pale or bright 

 yellow, and has a dull green stripe along the back : the nectaries 

 are as long as one-tenth of the body : the limbs except their 

 tips are very pale. Sometimes the feelers of the pupa are black, 

 pale yellow towards the base : its mouth is pale yellow with a 

 black tip : the nectaries are almost black : the legs are pale yellow ; 

 the knees, the feet, and the tips of the shanks are black : the 

 rudimentary wings are pale green. 



The wings are unfolded at the end of May, and the insect is 

 then green : the chest is tinged with buff : the feelers are black, 

 pale green towards the base : the fourth joint is much more than 

 half the length of the third ; the fifth is shorter than the fourth ; 

 the sixth is hardly half the length of the fifth ; the seventh is 

 nearly thrice the length of the sixth : the wings are colourless, 

 and longer than the body ; the wing-ribs, the rib-veins, and the 

 wing-brands are pale green or pale yellow ; the other veins are 

 dull yellow or brown, and their tips are very slightly clouded. 



